85099023 has 12 divisors (see below), whose sum is σ = 123080880. Its totient is φ = 56658816.

The previous prime is 85099019. The next prime is 85099039. The reversal of 85099023 is 32099058.

It is not a de Polignac number, because 85099023 - 2² = 85099019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85099013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1663 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (10256740).

Almost surely, 2^85099023 is an apocalyptic number.

85099023 is a deficient number, since it is larger than the sum of its proper divisors (37981857).

85099023 is a wasteful number, since it uses less digits than its factorization.

85099023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318 (or 12315 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 85099023 is about 9224.9131703231. The cubic root of 85099023 is about 439.8536410597.

The spelling of 85099023 in words is "eighty-five million, ninety-nine thousand, twenty-three".